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Hefa Cheng
Hefa Cheng
Peking University

Hefa Cheng is a tenured associate professor in environmental science at Collee of Urban and Environmental Sciences, Peking University. He received his Ph.D. in Civil and Environmental Engineering with a Ph.D. minor in Geological and Environmental Sciences from Stanford University in 2006. He worked as a postdoctoral fellow and a consulting assistant professor at Stanford University between 2006 and 2009. He joined the State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry as a research professor, supported by the Outstanding Oversea Talent (“One Hundred Talents”) program of the Chinese Academy of Sciences in 2009. In 2015, he moved to the College of Urban and Environmental Sciences, Peking University as a tenured associate professor. He is the author/co-author of over 100 journal papers including in Nat. Clim. Change, Nat. Commun., Environ. Sci. Technol., Wat. Res., and contributors of two book chapters. He received the SCOPE-Zhongyu Young Scientist Award from the Scientific Committee on Problems of the Environment (SCOPE) in 2012, and Hou Defeng Award from the Chinese Society of Mineralogy, Petrology and Geochemistry in 2014. He serves on the editorial boards of Journal of Contaminant Hydrology, Journal of Hazardous Materials, and Environmental Chemistry (China). His research focuses on understanding the mechanism of organic pollutant degradation on natural minerals, developing mineral-based treatment for destruction of organic pollutants, as well as on developing novel approaches for apportioning the sources of heavy metal pollution in surface soils.

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Cancellation Policy

If Allied Academies cancels this event for any reason, you will receive a credit for 100% of the registration fee paid. You may use this credit for another Allied Academies event which must occur within one year from the date of cancellation.


If Allied Academies Ltd postpones an event for any reason and you are unable or unwilling to attend on rescheduled dates, you will receive a credit for 100% of the registration fee paid. You may use this credit for another Allied Academies event which must occur within one year from the date of postponement.

Transfer of registration

All fully paid registrations are transferable to other persons from the same organization if registered person is unable to attend the event. Transfers must be made by the registered person in writing to . Details must include the full name of replacement person, their title, contact phone number and email address. All other registration details will be assigned to the new person unless otherwise specified.

Registration can be transferred to one conference to another conference of Allied Academies if the person is unable to attend one of the conferences.

However, Registration cannot be transferred if it is intimated within 14 days of the respective conference.

The transferred registrations will not be eligible for Refund.

Visa Information

Keeping in view of increased security measures, we would like to request all the participants to apply for Visa as soon as possible.

Allied Academies will not directly contact embassies and consulates on behalf of visa applicants. All delegates or invitees should apply for Business Visa only.

Important note for failed visa applications: Visa issues cannot come under the consideration of cancellation policy of Allied Academies, including the inability to obtain a visa.

Refund Policy

If the registrant is unable to attend, and is not in a position to transfer his/her participation to another person or event, then the following refund arrangements apply:

Keeping in view of advance payments towards Venue, Printing, Shipping, Hotels and other overheads, we had to keep Refund Policy is as following slabs-

  • Before 60 days of the conference: Eligible for Full Refund less $150 service Fee
  • Within 60-45 days of Conference: Eligible for 40% of payment Refund
  •  Within 45 days of Conference: Not eligible for Refund

Accommodation Cancellation Policy

Accommodation Providers (Hotels) have their own cancellation policies, and they generally apply when cancellations are made less than 30 days prior to arrival. Please contact us as soon as possible, if you wish to cancel or amend your accommodation. Allied Academies Ltd will advise the cancellation policy of your accommodation provider, prior to cancelling or amending your booking, to ensure you are fully aware of any non-refundable deposits.


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